1. The problem statement, all variables and given/known data A simple camera has a converging lens of focal length 50.0 mm. It is used to photograph a tree 3.00 m high. The tree is 8.00 m away from the lens. Calculate the distance v between the lens and the film, giving your answer in mm to three significant figures. 2. Relevant equations 1/f = 1/u + 1/v 3. The attempt at a solution 1/50 = 1/8000 + 1/(-v) v = -50.3 mm Is this correct? Thank you!